I Stumbled into the Immortal Realm and Analyzed Spiritual Qi

Human civilization has reached an advanced future, yet when vast numbers of demon races from beyond its borders invade, the vaunted quantum fusion defense network proves as flimsy as paper, torn apart in an instant. Just as humanity falls into despair, a sword aura sweeps past, leaving corpses strewn across the ground...

A mishap sends Lin Xingchen, who should have died, back to several decades before the invasion from another world.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.